Below is an interesting documentary with Richard Dawkins from 1987. Apparently following the publication of his book "The Selfish Gene" right wing economists regarded it as some sort of justification for their exploitative and seemingly nasty economic theories. Only the strong surviving and the weak poor suffer their fate as nature intended.
In this documentary Dawkins explains that this is a misinterpretation of what the biological science shows. He uses interesting studies in game theory to show that under natural selection kindness and mutual aid could be expected to produce a selective advantage. Altruism could be expected to make it more likely that a species would continue to pass on its genes successfully.
Our society teeters on the verge of environmental destruction and nuclear war, in my view because of our lack of empathy and altruism. If Dawkins is right and altruism is preferred by natural selection, then altruism is what the world will get. And it will get it either with humans or without them.